#include <stdio.h>
 
int main()
{
    printf("%d\n",100);
    //sizeof - 关键字 - 操作符 - 用于计算类型或者变量所占空间的大小
    printf("%d\n",sizeof(char));
    printf("%d\n",sizeof(short));
    printf("%d\n",sizeof(int));
    printf("%d\n",sizeof(long));
    printf("%d\n",sizeof(long long));
    printf("%d\n",sizeof(float));
    printf("%d\n",sizeof(double));
    return 0;
}